JP2003533786A - Input and display device - Google Patents

Input and display device

Info

Publication number
JP2003533786A
JP2003533786A JP2001583458A JP2001583458A JP2003533786A JP 2003533786 A JP2003533786 A JP 2003533786A JP 2001583458 A JP2001583458 A JP 2001583458A JP 2001583458 A JP2001583458 A JP 2001583458A JP 2003533786 A JP2003533786 A JP 2003533786A
Authority
JP
Japan
Prior art keywords
light
light guide
output screen
planar
elongated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001583458A
Other languages
Japanese (ja)
Inventor
イー ベルコフ ブルース
イェー コルネリッセン ヒューゴ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Electronics NV filed Critical Philips Electronics NV
Publication of JP2003533786A publication Critical patent/JP2003533786A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K11/00—Methods or arrangements for graph-reading or for converting the pattern of mechanical parameters, e.g. force or presence, into electrical signal
    • G06K11/06—Devices for converting the position of a manually-operated writing or tracing member into an electrical signal
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Human Computer Interaction (AREA)
  • Artificial Intelligence (AREA)
  • Computer Hardware Design (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

(57)【要約】 コリメートされたリニア光源からの光を部分的に光ガイド構造（６）に供給するとともに部分的に光ガイド構造（６）の表面の上を表面に沿って走行させる。光ガイド内を走行する光（１５、２０）はマイクロ光学構造によって下側の反射形ＬＣＤ又は上側の透過形ＬＣＤに出力結合され、これを照明する。光ガイド（６）の外部を表面に沿って走行する光（１７Ａ，１７Ｂ）は光検出器のアレイに向う。ペン（２１）又は指によるこの光の遮断を検出し、この遮断の位置を検出する。 (57) [Summary] Light from a collimated linear light source is partially supplied to a light guide structure (6), and partially runs on the surface of the light guide structure (6) along the surface. The light (15, 20) traveling in the light guide is output coupled to and illuminates the lower reflective LCD or the upper transmissive LCD by micro-optical structures. Light (17A, 17B) traveling along the surface outside the light guide (6) is directed to an array of photodetectors. The blockage of this light by the pen (21) or the finger is detected, and the position of this blockage is detected.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】 (技術分野) 本発明は、出力スクリーンと、出力スクリーンにおける位置に対するポインテ
ィングデバイスの位置を決定する手段とを具え、該位置決定手段が、出力スクリ
ーンの実質的に非平行の２つの辺に沿って延在し、出力スクリーンの表面にほぼ
平行な放射ビームを出力スクリーンの反対側の辺へ放射する細長い光源を具えて
いる入力及び表示装置に関するものである。TECHNICAL FIELD The present invention comprises an output screen and means for determining the position of a pointing device relative to a position on the output screen, the position determining means comprising two substantially non-parallel sides of the output screen. The invention relates to an input and display device comprising an elongated light source extending along and emitting a beam of radiation to the opposite side of the output screen, the beam of radiation being substantially parallel to the surface of the output screen.

【０００２】 (背景技術) このような装置は欧州特許出願ＥＰ−Ａ２−０．３６５．２３２から既知であ
り、これには光学式タッチパネルを具える集積液晶ディスプレイが開示されてい
る。細長い光源はその長さに沿って光の連続ビームを放射するように配置された
１個〜数個の慣例の発光ダイオードを具える。出力スクリーンを照明するために
追加の照明手段が設けられている。BACKGROUND ART Such a device is known from European patent application EP-A2-0.365.232, which discloses an integrated liquid crystal display with an optical touch panel. The elongated light source comprises one to several conventional light emitting diodes arranged to emit a continuous beam of light along its length. Additional lighting means are provided to illuminate the output screen.

【０００３】 (発明の開示) 本発明の目的は、種々の目的に使用される光の発生を簡単化した入力及び表示
装置を提供することにある。DISCLOSURE OF THE INVENTION It is an object of the present invention to provide an input and display device that simplifies the generation of light used for various purposes.

【０００４】 本発明は、頭書に記載の入力及び表示装置において、当該装置は出力スクリー
ン用の照明装置を具え、該照明装置はほぼ平面の光ガイドを具え、且つ前記細長
い光源は、前記平面光ガイドの実質的に非平行の２つの側面に沿って延在し、光
を前記平面光ガイドに結合する手段を具え、該光結合手段は前記平面光ガイドの
厚さ寸法より大きい接線方向寸法、即ち出力スクリーンの表面にほぼ平行な平面
光ガイドの表面にほぼ直角の方向の寸法を有する光出力窓を有するとともに、該
光結合手段は前記出力スクリーンの表面及び平面光ガイドの表面のうちの上位の
表面より上に突出し、前記光出力窓が前記上位の表面より上に突出する部分を有
していることを特徴とする。The invention relates to an input and display device as described in the introduction, in which the device comprises a lighting device for an output screen, the lighting device comprising a substantially planar light guide, and the elongated light source comprises the planar light source. Means for coupling light into the planar light guide, the light coupling means extending along two substantially non-parallel sides of the guide, the light coupling means having a tangential dimension greater than a thickness dimension of the planar light guide; A light output window having a dimension in a direction substantially perpendicular to the surface of the planar light guide which is substantially parallel to the surface of the output screen, the light coupling means being a superordinate of the surface of the output screen and the surface of the planar light guide. Of the light output window and the light output window has a portion projecting above the upper surface.

【０００５】 この構成によれば、ランプや発光ダイオードのような単一の発光素子で出力ス
クリーン用の照明装置にも細長光源にも光を供給することが達成される。According to this configuration, it is possible to supply light to both the illumination device for the output screen and the elongated light source with a single light emitting element such as a lamp or a light emitting diode.

【０００６】 本発明の入力及び表示装置の好適実施例では、少なくとも一つの前記光結合手
段は前記平面光ガイドを構成する材料と同一の材料の細長片を具え、該細長片は
その長手軸線を中心に、平面光ガイドの向きに対して９０度回転されているもの
とする。In a preferred embodiment of the input and display device according to the invention, at least one of said light coupling means comprises a strip of the same material as the material of which said planar light guide is made, said strip having its longitudinal axis. It is assumed that the center is rotated 90 degrees with respect to the direction of the planar light guide.

【０００７】 この構成によれば、製造上の見地から、単一の平面光ガイド素子を製造し、次
にこれを複数の片に切断し、１つの大きい片で平面光ガイドを構成し、２つの小
さい片で、光を平面光ガイドに結合するとともに光ビームを出力スクリーンの表
面にほぼ平行に供給する前記手段を構成することが達成される。According to this configuration, from a manufacturing point of view, a single planar light guide element is manufactured, and then this is cut into a plurality of pieces, and one large piece constitutes the planar light guide, and In one small piece, it is achieved to combine the light into a planar light guide and to provide said means for delivering the light beam approximately parallel to the surface of the output screen.

【０００８】 (発明を実施するための最良の形態) 本発明を図面を参照して更に詳細に説明する。 図１にはハンドヘルドＰＣ、電子手帳又は個人用ディジタル補助装置（以後す
べてハンドヘルドＰＣという）の一例を示す。ハンドヘルドＰＣ １は出力スク
リーン２、ケース３及び実質的に非平行の２つの辺４及び５を具える。出力スク
リーン２は情報を観察者が読み取れるように表示する。ほとんど全てのハンドヘ
ルドＰＣが低電力要件のために反射形液晶ディスプレイ（ＬＣＤ）を使用してい
る。これらの製品を暗い環境、即ち不十分な周囲光の環鏡でも有用にするために
は、補助照明が要求される。この補助照明は、例えば反射形液晶ディスプレイの
上に配置された側面照明光ガイドからなる所謂フロント照明装置で実現すること
ができる。この光ガイド内には、光をディスプレイの方へ優先的に出力結合する
マイクロ光学構造が存在する。この光ガイドは図１に参照番号６で示され、出力
スクリーン２として反射形ＬＣＤを使用する場合には、この光ガイドはスクリー
ン２の上に、即ち出力スクリーン２と観察者との間に配置される。２つの点光源
を使用することは例えば米国特許第５，５０６，９２９号から既知である。２つ
の点光源により放出された光は２つの細長い光パイプ又はガイドに入力結合する
。これらの光パイプには、光パイプ内の光を平面光ガイド６（図１）のような平
面光ガイドの方向に向けさせるマイクロ光学構造が設けられている。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the drawings. FIG. 1 shows an example of a handheld PC, an electronic notebook, or a personal digital assistant (hereinafter referred to as a handheld PC). The handheld PC 1 comprises an output screen 2, a case 3 and two substantially non-parallel sides 4 and 5. The output screen 2 displays the information so that it can be read by an observer. Almost all handheld PCs use reflective liquid crystal displays (LCDs) because of their low power requirements. Auxiliary lighting is required for these products to be useful in dark environments, i.e. in poor ambient light ring mirrors. This auxiliary illumination can be realized by a so-called front illumination device including a side illumination light guide arranged on a reflective liquid crystal display, for example. Within this light guide are micro-optical structures that preferentially couple light out towards the display. This light guide is designated by the reference numeral 6 in FIG. 1 and when a reflective LCD is used as the output screen 2, this light guide is arranged above the screen 2, ie between the output screen 2 and the observer. To be done. The use of two point sources is known, for example from US Pat. No. 5,506,929. The light emitted by the two point sources couples into two elongated light pipes or guides. These light pipes are provided with micro-optical structures that direct the light in the light pipes towards a planar light guide, such as the planar light guide 6 (FIG. 1).

【０００９】 図２は本発明による入力及び表示装置の好適実施例の一部分を示し、特に平面
光ガイド６を対応する細長光源７及び８と一緒に示す。図２に示す実施例では、
細長光源７及び８は構造が同一であるため、それらの一方、例えば７のみを詳細
に説明する。細長光源７は例えば発光ダイオードのような点光源９を具える。点
光源９により放出された光１０は光パイプ（細長い光ガイド）１１の方向に放射
される。光パイプ１１はその側面１２が平面光ガイド６の入力側面１３に密接す
るように配置する。光源９からの光１０を光ガイド１１に結合する手段自体は既
知であり（例えば米国特許第５，５０６，９２９号参照）、本発明の要部を構成
するものでないため、これ以上詳しく説明しない。従来より既知のように、光ガ
イド１１の表面１４には光１０を矢印１５の方向に反射して平面光ガイド６に結
合させるマイクロ光学構造が設けらる。FIG. 2 shows part of a preferred embodiment of an input and display device according to the invention, in particular a planar light guide 6 together with corresponding elongated light sources 7 and 8. In the embodiment shown in FIG.
Since the elongated light sources 7 and 8 have the same structure, only one of them, eg 7, will be described in detail. The elongated light source 7 comprises a point light source 9 such as a light emitting diode. The light 10 emitted by the point light source 9 is emitted in the direction of a light pipe (elongated light guide) 11. The light pipe 11 is arranged so that its side surface 12 is in close contact with the input side surface 13 of the flat light guide 6. The means for coupling the light 10 from the light source 9 into the light guide 11 is known per se (see eg US Pat. No. 5,506,929) and does not form an essential part of the invention and will therefore not be described in further detail. . As is known in the art, the surface 14 of the light guide 11 is provided with a micro-optical structure which reflects the light 10 in the direction of the arrow 15 and couples it into the planar light guide 6.

【００１０】 平面光ガイド６の厚さ寸法を“Ｄ”で示す。光ガイド１１の接線方向寸法Ｅ、
即ち平面光ガイド６の厚さ寸法と同一方向の表面１２の寸法の方が寸法Ｄより大
きい。表面１２の部分１６が平面光ガイド６より上に突出する。光ガイド１１の
表面１４のマイクロ光学構造は光を表面部分１６からも出力させ、即ち表面部分
１６は平面光ガイド６の上面より上に突出する光ガイド１１の部分に光出力窓を
構成する。矢印１７Ａ，１７Ｂ等で示すように、ほぼ平行な光ビームが光ガイド
１１の表面１６から放射される。The thickness dimension of the planar light guide 6 is indicated by “D”. The tangential dimension E of the light guide 11,
That is, the dimension of the surface 12 in the same direction as the thickness dimension of the planar light guide 6 is larger than the dimension D. A portion 16 of the surface 12 projects above the planar light guide 6. The micro-optical structure of the surface 14 of the light guide 11 also allows light to be output from the surface portion 16, i.e. the surface portion 16 constitutes a light output window in the portion of the light guide 11 projecting above the upper surface of the planar light guide 6. A substantially parallel light beam is emitted from the surface 16 of the light guide 11, as indicated by arrows 17A, 17B and the like.

【００１１】 対応する構成が細長光源８として図２に示されている。例えば米国特許第５，
５０６，９２９号からそれ自体既知の平面光ガイド６は光１５をその表面に沿っ
て均等に矢印１８の方向に向け、参照番号１９で図式的に示す反射形ＬＣＤを照
明する。A corresponding configuration is shown in FIG. 2 as an elongated light source 8. For example, US Pat.
A planar light guide 6 known per se from 506,929 directs light 15 evenly along its surface in the direction of arrow 18 and illuminates a reflective LCD, which is shown diagrammatically at 19.

【００１２】 平面光ガイド６の側面２０及び２１に沿って、光ビーム１７Ａ，１７Ｂ等を検
出するそれ自体既知の光検出器を設けて、参照番号２１で図式的に示すペンや指
のようなポインティングデバイスの位置を２つの方向に関し決定する。ポインテ
ィングデバイスの「影」の位置に基づいて出力スクリーン１９における位置に対
するポインティングデバイスの正確な位置を決定する点は当業者に既知であり、
本発明の要部ではない。Along the sides 20 and 21 of the planar light guide 6, a photodetector known per se is provided for detecting the light beams 17 A, 17 B etc., such as a pen or a finger, which is schematically indicated by reference numeral 21. The position of the pointing device is determined in two directions. It is known to those skilled in the art to determine the exact position of the pointing device with respect to its position on the output screen 19 based on the position of the "shadow" of the pointing device.
It is not an essential part of the present invention.

【００１３】 図２Ａは光ガイド１１及び細長光源８の光ガイド４２に光を入力するもっとコ
ンパクトな解決手段を示す。光ガイド１１と４２のコーナ部に単一の光源４３を
配置する。光源４３は好ましくは点光源であり、光ガイド１１の方向にも光ガイ
ド４２の方向にも放射する。FIG. 2A shows a more compact solution to input light into the light guide 11 and the light guide 42 of the elongated light source 8. A single light source 43 is arranged at the corner of the light guides 11 and 42. The light source 43 is preferably a point light source and emits light both in the direction of the light guide 11 and in the direction of the light guide 42.

【００１４】 図３Ａ−３Ｄは光パイプ１１を具える平面光ガイド６の有利な製造方法を示す
。図３Ａは上面２２にマイクロ光学構造２３が設けられた材料板２１を示す。当
業者に公知のように、表面２２に存在する、又は材料２１の本体内部に表面２２
に平行に存在するマイクロ光学構造２３は、材料２１内に存在する、水平方向か
らあまり大きく相違しない方向の光を矢印２４の方向に向けるよう作用する。線
２５は板２１を２つの部分に切断する位置を示す。切断後、板２１は図３Ｂに示
すように２つの部分２６及び２７に分割される。次に、部分２７を軸線２８（図
平面に垂直）を中心に矢印２９の方向に回転させる。回転後の状態を図３Ｃに示
す。この状態ではマイクロ光学構造２３は参照番号３０で示すように部分２７の
左側面に存在する点に注意されたい。その結果として、材料片２７に軸線２８に
ほぼ平行な方向に入力する光はマイクロ光学構造３０によって表面３１を矢印３
２及び３３の方向に通過するように向けられる。次に、部分２７を図３Ｃに示す
向きで部分２６に密接させる。その結果を図３Ｄに示す。3A-3D show an advantageous method of manufacturing a planar light guide 6 comprising a light pipe 11. FIG. 3A shows a material plate 21 having a top surface 22 provided with micro-optical structures 23. As is known to those skilled in the art, the surface 22 is present on the surface 22 or inside the body of the material 21.
The micro-optical structures 23, which are parallel to, act to direct the light present in the material 21 in the direction of the arrow 24, in a direction not significantly different from the horizontal direction. The line 25 shows the position where the plate 21 is cut into two parts. After cutting, the plate 21 is divided into two parts 26 and 27 as shown in Figure 3B. Next, the part 27 is rotated about the axis 28 (perpendicular to the drawing plane) in the direction of the arrow 29. The state after rotation is shown in FIG. 3C. Note that in this state the micro-optic structure 23 lies on the left side of the portion 27, as indicated by reference numeral 30. As a result, the light entering the material piece 27 in a direction substantially parallel to the axis 28 is directed by the micro-optical structure 30 onto the surface 31 by the arrow 3.
It is oriented to pass in the directions 2 and 33. Next, the portion 27 is brought into close contact with the portion 26 in the orientation shown in FIG. 3C. The result is shown in FIG. 3D.

【００１５】 図４は本発明の他の実施例を示し、本例では透過形ＬＣＤ１９’を背面３４か
ら照明する。平面光ガイド２６’にはその底面に又はその本体内にマイクロ光学
構造２３’が設けられる。図３について述べたように、部分２７’は材料板２６
’から切断したものである。マイクロ光学構造３０’は光を矢印３２’および３
３’の方向に向ける。矢印３２’の方向の光はマイクロ光学構造２３’によって
矢印３５で示すように透過形ＬＣＤ１９’の方向に向けられる。透過形ＬＣＤ１
９’の上面より上に突出する部分２７’の突部の出力窓を通過する光は透過形Ｌ
ＣＤ１９’の上を、透過形ＬＣＤ１９’の表面３６にほぼ平行なほぼ平行ビーム
として通過する。FIG. 4 shows another embodiment of the present invention, in which the transmissive LCD 19 ′ is illuminated from the back surface 34. The planar light guide 26 'is provided with micro-optical structures 23' on its bottom surface or in its body. As described with respect to FIG. 3, the portion 27 ′ is a material plate 26.
It was cut from '. The micro-optical structure 30 'directs light to the arrows 32' and 3 '.
Turn to 3'direction. Light in the direction of the arrow 32 'is directed by the micro-optical structure 23' toward the transmissive LCD 19 'as shown by the arrow 35. Transmissive LCD 1
The light passing through the output window of the protrusion of the portion 27 ′ protruding above the upper surface of 9 ′ is of the transmission type L
It passes over the CD 19 'as a substantially collimated beam that is substantially parallel to the surface 36 of the transmissive LCD 19'.

【図面の簡単な説明】[Brief description of drawings]

【図１】 本発明による入力及び表示装置の一例を示す。FIG. 1 shows an example of an input and display device according to the present invention.

【図２】 本発明による照明装置を示す。FIG. 2 shows a lighting device according to the invention.

【図２Ａ】 本発明による他の照明装置を示す。FIG. 2A shows another lighting device according to the invention.

【図３】 単一の材料板から照明装置及び細長光源を製造する方法を示す。FIG. 3 illustrates a method of manufacturing a lighting device and an elongated light source from a single plate of material.

【図４】 透過形液晶ディスプレイに適用した本発明による照明装置を示す。FIG. 4 shows an illumination device according to the present invention applied to a transmissive liquid crystal display.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 ヒューゴ イェー コルネリッセン オランダ国 5656 アーアー アインドー フェン プロフ ホルストラーン ６ Ｆターム(参考） 2H091 FA23X FA45X FC16 FD11 LA30 MA10 5B068 AA22 AA32 BB18 BC04 BC07 5B087 CC01 CC11 CC33 5C096 AA28 BA02 BB48 CD02 FA08─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hugo Ye Cornelissen             Netherlands 5656 aer ind             Fenprof Holstraan 6 F-term (reference) 2H091 FA23X FA45X FC16 FD11                       LA30 MA10                 5B068 AA22 AA32 BB18 BC04 BC07                 5B087 CC01 CC11 CC33                 5C096 AA28 BA02 BB48 CD02 FA08

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 出力スクリーンと、出力スクリーンにおける位置に対するポイン
ティングデバイスの位置を決定する手段とを具え、該位置決定手段が、出力スク
リーンの実質的に非平行の２つの辺に沿って延在し、光を出力スクリーンの表面
にほぼ平行なビームとして出力スクリーンの反対側の辺へ放射する細長い光源を
具えている入力及び表示装置において、出力スクリーン用の照明装置を具え、該
照明装置はほぼ平面の光ガイドを具え、且つ前記細長い光源は、前記平面光ガイ
ドの実質的に非平行の２つの側面に沿って延在し、光を前記平面光ガイドに結合
する手段を具え、該光結合手段は前記平面光ガイドの厚さ寸法より大きい接線方
向寸法、即ち出力スクリーンの表面にほぼ平行な平面光ガイドの表面にほぼ直角
の方向の寸法を有する光出力窓を有するとともに、該光結合手段は前記出力スク
リーンの表面及び平面光ガイドの表面のうちの上位の表面より上に突出し、前記
光出力窓が前記上位の表面より上に突出する部分を有していることを特徴とする
入力及び表示装置。1. An output screen and means for determining the position of a pointing device relative to a position on the output screen, the position determining means extending along two substantially non-parallel sides of the output screen. An input and display device comprising an elongated light source that emits light to the opposite side of the output screen as a beam substantially parallel to the surface of the output screen, comprising an illuminator for the output screen, the illuminator being substantially planar. Light guide and the elongated light source comprises means for extending light along two substantially non-parallel sides of the planar light guide and coupling light into the planar light guide. Has a tangential dimension greater than the thickness dimension of said planar light guide, i.e. a dimension substantially parallel to the surface of the output screen and substantially perpendicular to the surface of the planar light guide. With the light output window, the light coupling means projects above the upper surface of the surface of the output screen and the surface of the planar light guide, and the portion where the light output window projects above the upper surface. An input and display device characterized by having. 【請求項２】 少なくとも一つの前記光結合手段は前記平面光ガイドを構成する
材料と同一の材料の細長い片を具え、該細長片はその長手軸線を中心に、平面光
ガイドの向きに対して９０度回転された向きに配置されていることを特徴とする
請求項１記載の装置。2. At least one said light coupling means comprises a strip of the same material as the material of which said planar light guide is made, said strip being centered about its longitudinal axis relative to the orientation of the planar light guide. The device of claim 1, wherein the device is arranged in a 90 ° rotated orientation. 【請求項３】 平面光ガイドの実質的に非平行の２つの側面に沿って延在する前
記光結合手段は細長い光ガイドと、該細長い光ガイドの端面の近くに設けられ、
前記細長い光ガイドの端面に光学的に結合された点光源とを具え、各細長い光ガ
イドにはその長手側面に沿って光学構造が設けられ、該光学構造がこれに衝突す
る光を当該細長い光ガイドの長手軸線にほぼ直角の方向に向けるよう構成されて
いることを特徴とする請求項１又は２記載の装置。3. An elongate light guide, the light coupling means extending along two substantially non-parallel sides of a planar light guide, the emissive light guide being provided near an end surface of the elongate light guide.
A light source optically coupled to an end face of the elongated light guides, each elongated light guide being provided with an optical structure along a longitudinal side thereof, the optical structure directing light impinging upon the elongated light guide. 3. A device as claimed in claim 1 or 2, characterized in that it is arranged to orient substantially perpendicular to the longitudinal axis of the guide. 【請求項４】 前記点光源は発光ダイオードを具えることを特徴とする請求項３
記載の装置。4. The point light source comprises a light emitting diode.
The described device. 【請求項５】 前記細長い光ガイドの長手軸線にほぼ直角の方向は出力スクリー
ンの表面にほぼ平行であることを特徴とする請求項３または４記載の装置。5. Apparatus according to claim 3 or 4, characterized in that the direction substantially perpendicular to the longitudinal axis of the elongated light guide is substantially parallel to the surface of the output screen.
JP2001583458A 2000-05-12 2001-04-24 Input and display device Pending JP2003533786A (en)

Applications Claiming Priority (3)

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US09/569,616 US6803900B1 (en) 2000-05-12 2000-05-12 Input and display device
US09/569,616 2000-05-12
PCT/EP2001/004599 WO2001086586A1 (en) 2000-05-12 2001-04-24 Input and display device

Publications (1)

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JP2003533786A true JP2003533786A (en) 2003-11-11

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US (1) US6803900B1 (en)
EP (1) EP1285401A1 (en)
JP (1) JP2003533786A (en)
KR (1) KR20020033155A (en)
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WO (1) WO2001086586A1 (en)

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Also Published As

Publication number Publication date
CN1386243A (en) 2002-12-18
US6803900B1 (en) 2004-10-12
KR20020033155A (en) 2002-05-04
EP1285401A1 (en) 2003-02-26
WO2001086586A1 (en) 2001-11-15

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